Source:

"Plough-bullocking. The act of taking part in the 'Plough Monday'
rites and observances. 'I expect I shall have to go a plough-bullockin'
to Mr. S's' (L.C.M.). 'Shan't yer coom a plough-bullockin'
wee us tonight?' (J.P.K.)"

"Plough-bullocks. Farm-servants or plough-men performing in the
'Plough Monday' observances. So called at Ratcliffe. (E.P.).
(L.C.M.). 'In the old days a plough highly decorated was drawn
through the streets, and the true plough bullocks were no doubt
the young men who harnessed themselves to it and pulled it along.'
(J.P.K.)."

"Plough-Monday. The first Monday after Twelfth Day. (L.C.M.,
J.P.K.)."

"Plough-money. The money given to the 'Plough-bullocks' on
'Plough Monday.'"